You have a couple of options: the first is Merge. This tool allows you to (as the name implies) merge several source feature classes together into one. The downside is you end up with an attribute table with all the attributes from frome each of the features classes.
The second, and one that I personally prefer in cases such as yours is to create an empty feature class designing it such that you have just the fields in it you want. (See Create Feature Class—Data Management toolbox | Documentation ). Then use the append tool to bring your source data into your new target using the feild mapping part of the tool that matches the input (source) fields to the output(target) fields.
That should just about do it....
